This is port for Drupal 8 of module https://www.drupal.org/project/word_link
Also were added some new features:
- Setting for max numbers of all links on the page.
- Setting for max numbers of keyword links on the page.
- Setting to edit regular expressions for full word search and search all occurrence.
- Caching of filtered node body in custom cache entity to prevent keywords filtering each time when node is displayed.